Answers Database
XC4000E: What is the maximum continuous sourcing current?
Record #4453
Product Family: Hardware
Product Line: 4000E
Product Part: 4000E
Problem Title:
XC4000E: What is the maximum continuous sourcing current?
Problem Description:
Urgency : Standard
General Description
What is the abolute maximum continuous current xc4000E parts can handle without damaging the parts?
Solution 1:
Regardless of Voh, maximum continuous current should not exceed 20mA per i/o.
The 20 mA limit is due to on-chip metal migration. Aluminum tolerates "only" about 1 mA per micron w
idth of continuous current ( thousands of hours ). That is a current density of 1 mA per square micr
on, or 1000 A per square millimeter ( that's the cross area of a typical lamp cord!).
Exceeding this limit, the device may still function, however, the effect is accumulative and in the
long term you will be damaging the device.
End of Record #4453 - Last Modified: 01/25/99 14:01 |
